The Seat Arosa 1.7 SDI 60hp (1997 - 2001) produces 60bhp and 115Nm in standard form. Our Stage 1 ECU tuning file raises output to 70bhp and 135Nm, a gain of 10bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.